1 cea10000 2005-05-01 devnull typedef struct mcontext mcontext_t;
 2 cea10000 2005-05-01 devnull typedef struct ucontext ucontext_t;
 3 cea10000 2005-05-01 devnull struct mcontext
 4 cea10000 2005-05-01 devnull {
 5 cea10000 2005-05-01 devnull 	ulong	pc;		/* lr */
 6 cea10000 2005-05-01 devnull 	ulong	cr;		/* mfcr */
 7 cea10000 2005-05-01 devnull 	ulong	ctr;		/* mfcr */
 8 cea10000 2005-05-01 devnull 	ulong	xer;		/* mfcr */
 9 cea10000 2005-05-01 devnull 	ulong	sp;		/* callee saved: r1 */
10 cea10000 2005-05-01 devnull 	ulong	toc;		/* callee saved: r2 */
11 cea10000 2005-05-01 devnull 	ulong	r3;		/* first arg to function, return register: r3 */
12 cea10000 2005-05-01 devnull 	ulong	gpr[19];	/* callee saved: r13-r31 */
13 cea10000 2005-05-01 devnull // XXX: currently do not save vector registers or floating-point state
14 cea10000 2005-05-01 devnull //	ulong	pad;
15 cea10000 2005-05-01 devnull //	uvlong	fpr[18];	/* callee saved: f14-f31 */
16 cea10000 2005-05-01 devnull //	ulong	vr[4*12];	/* callee saved: v20-v31, 256-bits each */
17 cea10000 2005-05-01 devnull };
18 cea10000 2005-05-01 devnull 
19 cea10000 2005-05-01 devnull struct ucontext
20 cea10000 2005-05-01 devnull {
21 cea10000 2005-05-01 devnull 	struct {
22 cea10000 2005-05-01 devnull 		void *ss_sp;
23 cea10000 2005-05-01 devnull 		uint ss_size;
24 cea10000 2005-05-01 devnull 	} uc_stack;
25 cea10000 2005-05-01 devnull 	sigset_t uc_sigmask;
26 cea10000 2005-05-01 devnull 	mcontext_t mc;
27 cea10000 2005-05-01 devnull };
28 cea10000 2005-05-01 devnull 
29 cea10000 2005-05-01 devnull void makecontext(ucontext_t*, void(*)(void), int, ...);
30 cea10000 2005-05-01 devnull int getcontext(ucontext_t*);
31 cea10000 2005-05-01 devnull int setcontext(ucontext_t*);
32 cea10000 2005-05-01 devnull int swapcontext(ucontext_t*, ucontext_t*);
33 cea10000 2005-05-01 devnull int _getmcontext(mcontext_t*);
34 cea10000 2005-05-01 devnull void _setmcontext(mcontext_t*);
35 cea10000 2005-05-01 devnull